FR2374637A2 - Circuit de detection de gaz combustibles dans l'atmosphere d'une mine - Google Patents

Circuit de detection de gaz combustibles dans l'atmosphere d'une mine

Info

Publication number
FR2374637A2
FR2374637A2 FR7737718A FR7737718A FR2374637A2 FR 2374637 A2 FR2374637 A2 FR 2374637A2 FR 7737718 A FR7737718 A FR 7737718A FR 7737718 A FR7737718 A FR 7737718A FR 2374637 A2 FR2374637 A2 FR 2374637A2
Authority
FR
France
Prior art keywords
mine
atmosphere
detection circuit
combustible gas
gas detection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7737718A
Other languages
English (en)
Other versions
FR2374637B2 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Consolidation Coal Co
Original Assignee
Consolidation Coal Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US05/750,877 external-priority patent/US4064498A/en
Application filed by Consolidation Coal Co filed Critical Consolidation Coal Co
Publication of FR2374637A2 publication Critical patent/FR2374637A2/fr
Application granted granted Critical
Publication of FR2374637B2 publication Critical patent/FR2374637B2/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
    • G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
    • G01N33/0063—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display using a threshold to release an alarm or displaying means
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/117—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means by using a detection device for specific gases, e.g. combustion products, produced by the fire

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Combustion & Propulsion (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Emergency Alarm Devices (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

L'invention concerne un circuit de détection de gaz combustibles dans l'atmosphère d'une mine. Il comporte deux capteurs contenant des régulateurs de courant ou de tension. Les signaux produits sont comparés entre eux et avec un niveau de référence Un dispositif d'alarme est déclenché à l'apparition d'une différence prédéterminée entre les signaux ou par rapport au niveau de référence. Application à la détection du méthane dans les mines de charbon. Un circuit de panne prévient l'opérateur en cas de défaillance des capteurs.
FR7737718A 1976-12-15 1977-12-14 Circuit de detection de gaz combustibles dans l'atmosphere d'une mine Granted FR2374637A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/750,877 US4064498A (en) 1975-10-28 1976-12-15 Electrical circuitry for detecting a combustible mixture of gas in a mine atmosphere

Publications (2)

Publication Number Publication Date
FR2374637A2 true FR2374637A2 (fr) 1978-07-13
FR2374637B2 FR2374637B2 (fr) 1984-09-14

Family

ID=25019511

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7737718A Granted FR2374637A2 (fr) 1976-12-15 1977-12-14 Circuit de detection de gaz combustibles dans l'atmosphere d'une mine

Country Status (5)

Country Link
AU (1) AU510944B2 (fr)
DE (1) DE2755337A1 (fr)
FR (1) FR2374637A2 (fr)
GB (1) GB1592506A (fr)
ZA (1) ZA777399B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0069393A1 (fr) * 1981-07-08 1983-01-12 Rheinische Braunkohlenwerke AG. Méthode pour la détection du début d'incendies carboniques dans des récipients contenant de la poussière de lignite par détection de méthane
FR2511506A1 (fr) * 1981-08-12 1983-02-18 Auergesellschaft Gmbh Montage pour un appareil servant a mesurer et a afficher la concentration de gaz et de vapeurs combustibles contenus dans l'air
FR2514407A1 (fr) * 1981-10-13 1983-04-15 Coal Industry Patents Ltd Tete rotative de havage munie d'un detecteur d'une condition dangereuse de travail, telle qu'une concentration de methane

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE762753A (fr) * 1971-02-10 1971-07-16 Inst Tekhn Teplofiziki Akademi Dispositif pour la mesure de la concentration des gaz et des combustibles
US3634757A (en) * 1968-03-21 1972-01-11 Charbonnages De France Measuring bridge having a temperature-compensating transistorized voltage stabilizer shunting the power supply to the bridge
GB1419361A (en) * 1974-03-26 1975-12-31 Gen Monitors Multi-channel combustible gas detector
FR2293711A1 (fr) * 1974-12-06 1976-07-02 Bosch Gmbh Robert Installation pour le controle des gaz, notamment des gaz d'echappement de moteurs a combustion interne

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3634757A (en) * 1968-03-21 1972-01-11 Charbonnages De France Measuring bridge having a temperature-compensating transistorized voltage stabilizer shunting the power supply to the bridge
BE762753A (fr) * 1971-02-10 1971-07-16 Inst Tekhn Teplofiziki Akademi Dispositif pour la mesure de la concentration des gaz et des combustibles
GB1419361A (en) * 1974-03-26 1975-12-31 Gen Monitors Multi-channel combustible gas detector
FR2293711A1 (fr) * 1974-12-06 1976-07-02 Bosch Gmbh Robert Installation pour le controle des gaz, notamment des gaz d'echappement de moteurs a combustion interne

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0069393A1 (fr) * 1981-07-08 1983-01-12 Rheinische Braunkohlenwerke AG. Méthode pour la détection du début d'incendies carboniques dans des récipients contenant de la poussière de lignite par détection de méthane
WO1983000247A1 (fr) * 1981-07-08 1983-01-20 Wolfrum, Erhard Procede pour le depistage precoce de feux couvants dans des recipients contenant de la poussiere de lignite par depistage de methane
FR2511506A1 (fr) * 1981-08-12 1983-02-18 Auergesellschaft Gmbh Montage pour un appareil servant a mesurer et a afficher la concentration de gaz et de vapeurs combustibles contenus dans l'air
FR2514407A1 (fr) * 1981-10-13 1983-04-15 Coal Industry Patents Ltd Tete rotative de havage munie d'un detecteur d'une condition dangereuse de travail, telle qu'une concentration de methane

Also Published As

Publication number Publication date
ZA777399B (en) 1978-10-25
FR2374637B2 (fr) 1984-09-14
AU3124877A (en) 1979-06-14
GB1592506A (en) 1981-07-08
AU510944B2 (en) 1980-07-24
DE2755337A1 (de) 1978-06-22

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